Address
Nanzhai village, Liushi Town, yueqingCity, zhejiang Province, china
Tel
+86-13375775325
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Product Size:
Technology Parameter:
Product Name: Porcelain Fuse Cutout ( is also named Ceramic Drop Out Fuse, Ceramic Fuse Cutout)
Product Type: RW10-11F-100A
Body - porcelain
Maximum Design Voltage: 17.5KV
Rated voltage: 11kv
Rated current: 100A
Interrupt Capacity(Breaking current): 10kA
Impulse voltage (BIL): 110kV
Power frequency withstand voltage: 42kV
Leakage distance: 372mm
Weight: 8.5kgs
Dimensions: 520x370x135mm
1. Product Overview:
This 11kV, 100A Drop Out Fuse is a critical overcurrent protection device designed for medium-voltage distribution networks. Featuring a porcelain insulator, a creepage distance of 372mm, and an integrated arc quenching chamber, it ensures reliable interruption of fault currents while enhancing safety and durability in outdoor environments.
2. Construction
Fuse Base:
Mounted on a crossarm or pole structure, equipped with robust porcelain insulators.
Porcelain Insulator:
Provides high mechanical strength, weather resistance, and electrical insulation. The 372mm creepage distance prevents surface leakage currents in polluted or humid conditions (e.g., coastal/industrial areas).
Fuse Carrier (Housing):
Holds the fuse element and arc quenching chamber. Pivots downward ("drops out") upon operation for visual fault indication.
Fuse Element:
A calibrated alloy wire/tube designed to melt at specific overcurrent thresholds.
Arc Quenching Chamber (Mounted on Carrier):
Key Component:A cylindrical enclosure lined with high gas-generation materials (e.g., fiberglass-reinforced polymer) surrounding the fuse element.
3. Function & Operation
Normal Conditions:
Current flows uninterrupted through the fuse element.
Overcurrent/Fault:
The fuse element melts, creating an electric arc.
Arc Interruption Process:
1. Arc Initiation: The arc forms within the quenching chamber.
2. Gas Generation: Chamber lining vaporizes, releasing deionizing gases (H₂, CO) under high pressure.
3. Arc Extinction: Gases cool and split the arc into segments, rapidly increasing resistance to quench it within milliseconds.
4. Drop-Out:The carrier releases, visibly disconnecting the circuit.
4. Key Features & Advantages
Arc Quenching Chamber:
-Critical Role:
- Rapid Arc Suppression: Limits arc duration to <10ms, preventing equipment damage.
- Containment: Prevents arc plasma from escaping, protecting nearby components.
- Voltage Withstand:Prevents restrikes by cooling gases, ensuring full interruption.
- Enhanced Safety: Reduces risk of fires or insulator flashovers.
- Performance: Enables reliable interruption up to the rated 100A fault current.
Overall Design Advantages:
- High Creepage (372mm): Exceeds standard requirements (e.g., IEC 60273) for polluted environments.
- Porcelain Insulator: Resists UV, thermal cycling, and mechanical stress.
- Drop-Out Mechanism: Clear visual fault indication for quick maintenance.
- Maintenance-Friendly: Simple replacement of fuse carrier.
5. Applications
- Primary Protection:
Transformers (11kV/400V), capacitor banks, feeders in rural/urban distribution networks.
- Isolation:
Sectionalizing overhead lines or isolating faulted branches.
- Environments:
Ideal for coastal, industrial, or high-humidity zones due to extended creepage distance.
- Renewable Integration:
Protecting solar/wind step-up transformers.
6. Why the Arc Quenching Chamber is Indispensable
Without the chamber, arcs could:
- Sustain for 100ms+, causing insulator cracking or wildfires.
- Trigger phase-to-phase faults via plasma expansion.
- Fail to interrupt inductive currents (e.g., transformer magnetizing currents).
The chamber ensures safe, reliable operation at the full 100A rating, especially vital for 11kV systems with high fault levels.
Company Strength:
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Product Size:
Technology Parameter:
Product Name: Porcelain Fuse Cutout ( is also named Ceramic Drop Out Fuse, Ceramic Fuse Cutout)
Product Type: RW10-11F-100A
Body - porcelain
Maximum Design Voltage: 17.5KV
Rated voltage: 11kv
Rated current: 100A
Interrupt Capacity(Breaking current): 10kA
Impulse voltage (BIL): 110kV
Power frequency withstand voltage: 42kV
Leakage distance: 372mm
Weight: 8.5kgs
Dimensions: 520x370x135mm
1. Product Overview:
This 11kV, 100A Drop Out Fuse is a critical overcurrent protection device designed for medium-voltage distribution networks. Featuring a porcelain insulator, a creepage distance of 372mm, and an integrated arc quenching chamber, it ensures reliable interruption of fault currents while enhancing safety and durability in outdoor environments.
2. Construction
Fuse Base:
Mounted on a crossarm or pole structure, equipped with robust porcelain insulators.
Porcelain Insulator:
Provides high mechanical strength, weather resistance, and electrical insulation. The 372mm creepage distance prevents surface leakage currents in polluted or humid conditions (e.g., coastal/industrial areas).
Fuse Carrier (Housing):
Holds the fuse element and arc quenching chamber. Pivots downward ("drops out") upon operation for visual fault indication.
Fuse Element:
A calibrated alloy wire/tube designed to melt at specific overcurrent thresholds.
Arc Quenching Chamber (Mounted on Carrier):
Key Component:A cylindrical enclosure lined with high gas-generation materials (e.g., fiberglass-reinforced polymer) surrounding the fuse element.
3. Function & Operation
Normal Conditions:
Current flows uninterrupted through the fuse element.
Overcurrent/Fault:
The fuse element melts, creating an electric arc.
Arc Interruption Process:
1. Arc Initiation: The arc forms within the quenching chamber.
2. Gas Generation: Chamber lining vaporizes, releasing deionizing gases (H₂, CO) under high pressure.
3. Arc Extinction: Gases cool and split the arc into segments, rapidly increasing resistance to quench it within milliseconds.
4. Drop-Out:The carrier releases, visibly disconnecting the circuit.
4. Key Features & Advantages
Arc Quenching Chamber:
-Critical Role:
- Rapid Arc Suppression: Limits arc duration to <10ms, preventing equipment damage.
- Containment: Prevents arc plasma from escaping, protecting nearby components.
- Voltage Withstand:Prevents restrikes by cooling gases, ensuring full interruption.
- Enhanced Safety: Reduces risk of fires or insulator flashovers.
- Performance: Enables reliable interruption up to the rated 100A fault current.
Overall Design Advantages:
- High Creepage (372mm): Exceeds standard requirements (e.g., IEC 60273) for polluted environments.
- Porcelain Insulator: Resists UV, thermal cycling, and mechanical stress.
- Drop-Out Mechanism: Clear visual fault indication for quick maintenance.
- Maintenance-Friendly: Simple replacement of fuse carrier.
5. Applications
- Primary Protection:
Transformers (11kV/400V), capacitor banks, feeders in rural/urban distribution networks.
- Isolation:
Sectionalizing overhead lines or isolating faulted branches.
- Environments:
Ideal for coastal, industrial, or high-humidity zones due to extended creepage distance.
- Renewable Integration:
Protecting solar/wind step-up transformers.
6. Why the Arc Quenching Chamber is Indispensable
Without the chamber, arcs could:
- Sustain for 100ms+, causing insulator cracking or wildfires.
- Trigger phase-to-phase faults via plasma expansion.
- Fail to interrupt inductive currents (e.g., transformer magnetizing currents).
The chamber ensures safe, reliable operation at the full 100A rating, especially vital for 11kV systems with high fault levels.
Company Strength:
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